3 results about "Photoelectrolysis" patented technology

This invention provides a method for the resource-based treatment of tailings wastewater and the simultaneous recovery of valuable metals, belonging to the field of mine wastewater treatment technology. The method includes: constructing a reaction system, which comprises a transparent reactor with a built-in working electrode, a power-free photovoltaic cell circuit system, a powered photoelectric electrolysis circuit system, and a light source; the photovoltaic cell circuit system and the photoelectric electrolysis circuit system are switched in parallel; the tailings wastewater is introduced into the transparent reactor and sealed; the light source is turned on, and only the photovoltaic cell circuit system is activated, to oxidize ammonia nitrogen into nitrogen gas and nitrate nitrogen, and recover some manganese metal; the light source is turned on, and only the photoelectric electrolysis circuit system is activated, to reduce manganese ions to recover manganese metal and reduce nitrate nitrogen into nitrogen gas. This invention provides a clean and efficient method for simultaneously oxidizing ammonia nitrogen in mine tailings wastewater and recovering valuable metals from the tailings wastewater; it utilizes an interconvertible photovoltaic cell reaction system and a photoelectric electrolysis reaction system to efficiently degrade ammonia-containing pollutants in tailings wastewater and recover manganese metal.

The utility model discloses a kind of floating solar photolysis water oxygenation hydrogen production devices, the device is provided with water storage pool and pure water tank, pure water tank is obtained by water evaporation in water storage pool, and water is supplied to photoelectrolytic cell by inlet pipe, solar cell assembly is arranged in the frame of photoelectrolytic cell, for converting solar light into electric energy, maintaining the required bias voltage of photoelectrolytic water;Its inside is provided with photoelectrochemical water decomposition component, for the energy electrolytic water hydrogen production in ultraviolet in solar spectrum and visible spectrum, photoelectrochemical water decomposition component includes anode catalyst layer, glass layer, light absorption layer and cathode catalyst layer, anode catalyst layer uses self-bias photo catalyst electrode, oxygen is generated under catalytic action and hydrogen is produced at cathode, infrared spectrum not absorbed by light anode is further converted into bias voltage by light absorption layer and maintained photolysis water hydrogen production.

The present invention provide a photoanode for a photoelectrolysis device, and a manufacturing method therefor. The photoanode for a photoelectrolysis device comprises: a polyimide (PI) layer; a laser-induced graphene (LIG) substrate formed by irradiating the PI layer with a laser; and a monoclinic tungsten oxide (m-WO3) nanostructure layer formed on the LIG substrate, wherein the PI layer is a flexible substrate and the photoanode is flexible.